Pipe size for hose bibb

I will be replacing the cold water piping in my basement soon. The existing line is a combination of 1" galvanized and black pipe which I will replace with 1" copper. There is one existing hose bibb and it appears to be fed using 1/2" black pipe. I intend on replacing this branch as well as adding another for a total of two exterior hose bibbs. Can someone recommend a size for these branches? 3/4"?

Thanks,
Jimmy

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